For example, SP sends a short message to a handset, which is realized by sending a Submit command to the local SMG.Then, SP will receive a Submit_Resp response from the SMG.

• 比如，SP向某一个手机发送一条短消息，是通过向本地SMG发送一条Submit命令实现的，随后，SP会从SMG接收到一条Submit_Resp应答。